Information processing apparatus and cooling control method
a technology of information processing apparatus and cooling control method, which is applied in the direction of electrical apparatus casing/cabinet/drawer, semiconductor/solid-state device details, instruments, etc., can solve the problems of cpu operation speed significantly reducing, noise that is offensive to the user easy to generate, and user discomfor
Active Publication Date: 2007-03-01
TOSHIBA CLIENT SOLUTIONS CO LTD
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Benefits of technology
The invention relates to an information processing apparatus with a cooling fan and a cooling control method. The technical effect of the invention is to achieve compatibility between high system performance and low noise generation in the cooling function of the apparatus. The invention includes a mechanism for controlling the rotation speed of the cooling fan based on the temperature of the heating device, and a method for starting up the fan without causing offensive noise. The invention also includes a cooling control mechanism that can vary the rotation speed of the fan based on the temperature of the heating device, and a system configuration that includes a fan control unit and a temperature sensor. The invention provides a solution for achieving high system performance and low noise generation in cooling the information processing apparatus.
Problems solved by technology
When the fan rotates, it causes noise that makes a user uncomfortable.
Particularly when the fan starts to rotate, its rotation speed abruptly increases from zero to a given value; therefore, noise that is offensive to the user is easy to generate.
However, when the fan is not used, the CPU has to decrease in operation speed significantly in order to suppress heat generated from the CPU.
Method used
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[0032] Various embodiments according to the invention will be described hereinafter with reference to the accompanying drawings. In general, according to one embodiment of the invention, an information processing apparatus includes a heating device provided in a main body, a temperature sensor provided in the main body, which senses a temperature of the heating device, and a fan control unit provided in the main body, which rotates the cooling fan at a first rotation speed or higher during power-on of the main body and switches a rotation speed of the cooling fan to a second rotation speed which is higher than the first rotation speed when the temperature of the heating device sensed by the temperature sensor reaches a given threshold value.
[0033] Referring first to FIG. 1, the configuration of an information processing apparatus according to the embodiment will be described. The information processing apparatus is implemented as, for example, a battery-operable, portable notebook ...
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According to one embodiment, an information processing apparatus includes a main body, a heating device provided in the main body, a cooling fan provided in the main body, which cools the heating device, a temperature sensor provided in the main body, which senses a temperature of the heating device, and a fan control unit provided in the main body, which rotates the cooling fan at a first rotation speed or higher during power-on of the main body and switches a rotation speed of the cooling fan to a second rotation speed which is higher than the first rotation speed when the temperature of the heating device sensed by the temperature sensor reaches a given threshold value.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2005-249554, filed Aug. 30, 2005, the entire contents of which are incorporated herein by reference. BACKGROUND [0002] 1. Field [0003] One embodiment of the invention relates to an information processing apparatus such as a personal computer. More specifically, the embodiment relates to an information processing apparatus having a cooling fan and a cooling control method applied to the apparatus. [0004] 2. Description of the Related Art [0005] Various portable personal computers such as a laptop computer and a notebook computer have recently been developed. This type of personal computer includes a heating device such as a CPU, a display controller, a hard disk drive and a bus bridge device. [0006] A cooling fan is known as a cooling mechanism for cooling the heating device described above. [0007] Jpn. Pat. Appln. KOKAI Publication No....
Claims
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IPC IPC(8): H05K7/20G06F1/20H05K5/00
CPCG06F1/206G06F1/203
Inventor TSUTSUI, TOMONORI
Owner TOSHIBA CLIENT SOLUTIONS CO LTD